/Engine/Source/Runtime/Core/Public/Misc/StringFormatter.h
Format the specified string using the specified arguments. Replaces instances of {0} with indices from the given array matching the index specified in the token
A string containing the formatted text, or an error where InExpression is ill-formed, or contains undefined arguments
[TValueOrError](API\Runtime\Core\Math\TValueOrError)< [FString](API\Runtime\Core\Containers\FString), [FExpressionError](API\Runtime\Core\Misc\FExpressionError) > FormatStrict ( const TCHAR * InExpression, const [TArray](API\Runtime\Core\Containers\TArray)< [FStringFormatArg](API\Runtime\Core\Misc\FStringFormatArg) > & InArgs ) const